Virtual test optimization for driver assistance systems

Abstract

A method for validating a driver assistance system ( 3 ) of a vehicle, wherein tests (T) defined by test parameters (P) are carried out for a predetermined test scenario ( 4 ), during a first test (T(n)) at least on test parameter (P) is determined, and to generate a second test (T(n+1)) the first test (T(n)) is altered in order to displace the first test parameter (P) within a critical range ( 7 ) assigned to it.

The invention claimed is: 
     
       1. A method for validating a driver assistance system ( 3 ) of a vehicle, wherein for a predetermined test scenario ( 4 ), tests (T) defined by test parameters (P) are carried out, wherein during a first test (T(n)), at least one test parameter (P) is determined, and to generate a second test (T(n+1)), the first test (T(n)) is altered in such a way as to displace the test parameter (P) with a critical range ( 7 ) assigned to it, within which a driver assistance system actively intervenes in a driving event, and for the predetermined test scenario ( 4 ), the second test (T(n+1)) is carried out in order to validate the driver assistance system ( 3 ). 
     
     
       2. The method according to  claim 1 , wherein the test parameter (P) is itself altered, so that it lies within a critical range ( 7 ). 
     
     
       3. The method according to  claim 1 , wherein the test parameter (P) is dependent on further test parameters (P′), and wherein these further test parameters (P′) are altered such that the test parameter (P) lies within a critical range ( 7 ). 
     
     
       4. The method according to  claim 1 , wherein to generate the second test (T(n+1), the first test (T(n) is altered such that the test parameter (P) exceeds a limit value (G) such that when it is reached or exceeded, the drive assistance system ( 3 ) is activated to provide assistance. 
     
     
       5. The method according to  claim 1 , wherein the tests (T) are carried out in a real-life driving test and/or on the corresponding test stands with an at least partially real vehicle and/or also entirely virtually. 
     
     
       6. The method according to  claim 1 , wherein the driver assistance system ( 3 ) is formed from a number of individual functioning driver assistance systems. 
     
     
       7. The method according to  claim 1 , wherein real or virtual sensor data are made available to the driver assistance system ( 3 ), and that the driver assistance system ( 3 ) calculates the test parameters (P) from the sensor data, generates an internal driving situation ( 31 ) from that, and the internal driving situation ( 31 ) is compared with the real or virtual driving situation ( 5 ).